{"product_id":"allen-bradley-1746-nr4-analog-input-module","title":"Allen-Bradley | 1746-NR4 Analog Input Module","description":"\u003ch2\u003e\u003cstrong\u003eAllen-Bradley 1746-NR4 RTD\/Resistance Input Module\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003eAllen-Bradley\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e SLC 500 programmable controller system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e\u003cstrong\u003e1746-NR4\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e4-channel RTD\/Resistance analog input\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Channels:\u003c\/strong\u003e Four isolated RTD\/resistance inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA\/D Conversion:\u003c\/strong\u003e Sigma-delta modulation method\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Resolution:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e0.01° Celsius\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Performance Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e1746-NR4\u003c\/strong\u003e module provides \u003cspan style=\"color: #e74c3c;\"\u003efour independent input channels\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eIt supports multiple RTD types including Platinum, Copper, Nickel, and Nickel Iron\u003c\/li\u003e\n\u003cli\u003eMeasurement range covers from \u003cspan style=\"color: #e74c3c;\"\u003e-200°C to 850°C\u003c\/span\u003e for temperature sensing\u003c\/li\u003e\n\u003cli\u003eUpdate time is configurable between 17 milliseconds and 1.2 seconds per channel\u003c\/li\u003e\n\u003cli\u003eBandwidth ranges from 2.62 Hz to 65.5 Hz with programmable low-pass digital filtering\u003c\/li\u003e\n\u003cli\u003eThe module features automatic self-calibration when parameters change\u003c\/li\u003e\n\u003cli\u003eBuilt-in broken sensor detection identifies open or short circuit conditions\u003c\/li\u003e\n\u003cli\u003eFive status LEDs provide module and individual channel health indication\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSensor and Input Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatinum RTDs:\u003c\/strong\u003e 385 and 3916 curves with 100, 200, 500, 1000 ohm values\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCopper RTDs:\u003c\/strong\u003e 426 curve with 10 ohm resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel RTDs:\u003c\/strong\u003e 618 and 672 curves with 120 ohm resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNickel Iron RTDs:\u003c\/strong\u003e 518 curve with 604 ohm resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Resistance Inputs:\u003c\/strong\u003e \u003cspan style=\"color: #e74c3c;\"\u003e0-150Ω, 0-300Ω, 0-500Ω, 0-1000Ω\u003c\/span\u003e ranges\u003c\/li\u003e\n\u003cli\u003eResistance inputs measure displacement, position, or other process variables\u003c\/li\u003e\n\u003cli\u003eThe module provides proper excitation current for all connected sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical and Safety Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBackplane current requirement is \u003cspan style=\"color: #e74c3c;\"\u003e50 mA at both 5V DC and 24V DC\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaximum power consumption measures only 1.5 watts total\u003c\/li\u003e\n\u003cli\u003eIsolation rating is \u003cspan style=\"color: #e74c3c;\"\u003e500V DC for 1 minute\u003c\/span\u003e between inputs and backplane\u003c\/li\u003e\n\u003cli\u003eMaximum common-mode voltage tolerance is ±1 volt\u003c\/li\u003e\n\u003cli\u003eMaximum permanent overload protection: ±5V DC or ±5 mA\u003c\/li\u003e\n\u003cli\u003eNo external power supply needed - powered entirely from backplane\u003c\/li\u003e\n\u003cli\u003eStep response time is 60 milliseconds in, 2.5 milliseconds out\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEnvironmental and Installation Details\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating temperature range is \u003cspan style=\"color: #e74c3c;\"\u003e0°C to 60°C (32°F to 140°F)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eStorage temperature range is -40°C to 85°C (-40°F to 185°F)\u003c\/li\u003e\n\u003cli\u003eInstall in any 1746 chassis slot \u003cspan style=\"color: #e74c3c;\"\u003eexcept slot 0\u003c\/span\u003e (reserved for processor)\u003c\/li\u003e\n\u003cli\u003eCompatible with fixed style and modular style SLC 500 hardware\u003c\/li\u003e\n\u003cli\u003eWorks with 1746-A2 expansion chassis for system flexibility\u003c\/li\u003e\n\u003cli\u003eSupports both local chassis and remote I\/O configurations\u003c\/li\u003e\n\u003cli\u003eCompact design saves valuable control panel space\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackaging and Shipping Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEvery \u003cstrong\u003e1746-NR4\u003c\/strong\u003e module ships as \u003cspan style=\"color: #e74c3c;\"\u003enew and factory original\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eAll items come complete in manufacturer packaging with documentation\u003c\/li\u003e\n\u003cli\u003eWe maintain stock for immediate shipment after order confirmation\u003c\/li\u003e\n\u003cli\u003eStandard processing and shipping time is within 5 business days\u003c\/li\u003e\n\u003cli\u003eAvailable shipping carriers include FedEx, UPS, and DHL services\u003c\/li\u003e\n\u003cli\u003eReturn policy accepts qualified returns within 30 days of delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat sensors work with the 1746-NR4 module?\u003c\/strong\u003e\u003cbr\u003eThe \u003cstrong\u003e1746-NR4\u003c\/strong\u003e supports Platinum, Copper, Nickel, and Nickel Iron RTDs, plus direct resistance inputs up to 1000 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow many temperature sensors can I connect?\u003c\/strong\u003e\u003cbr\u003eYou can connect up to four separate RTD sensors, one to each of the module's input channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the temperature measurement resolution?\u003c\/strong\u003e\u003cbr\u003eThis module provides high precision with 0.01° Celsius resolution for accurate temperature monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan I measure resistance directly without RTDs?\u003c\/strong\u003e\u003cbr\u003eYes, the module accepts direct resistance inputs in ranges from 0-150Ω to 0-1000Ω for various applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhere do I install this module in the chassis?\u003c\/strong\u003e\u003cbr\u003eInstall the \u003cstrong\u003e1746-NR4\u003c\/strong\u003e in any slot of a 1746 chassis except slot 0, which is for the processor only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes the module need separate power wiring?\u003c\/strong\u003e\u003cbr\u003eNo, the module receives all necessary power directly from the SLC 500 backplane connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does the module handle sensor failures?\u003c\/strong\u003e\u003cbr\u003eBuilt-in diagnostics detect open or shorted sensors and report these conditions to the controller.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45570856059041,"sku":"1746-NR4","price":218.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/1746-NR4.jpg?v=1766565712","url":"https:\/\/www.autonexcontrol.com\/az\/products\/allen-bradley-1746-nr4-analog-input-module","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}